JP2011032604A - Recycled-paper smoothing device of used-paper recycling apparatus, papermaking device and used-paper recycling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide recycled-paper smoothing technology for manufacturing securely wrinkle-free and smooth recycled-paper from wet paper made and formed in a paper making processing unit of a paper making unit in a very narrow used-paper processing space of a used-paper recycling apparatus of furniture size. <P>SOLUTION: A recycled-paper smoothing part 10 includes a covering belt conveyor 190 furnished with a covering belt 200 that is in a form of a press means for pressing the whole wet paper RP<SB>0</SB>to be conveyed by a smoothing surface belt 145, from the upper side under uniform pressure at a heating and drying part 171 and travels with covering the whole wet paper RP<SB>0</SB>on the smoothing surface belt 145 in a nipped state between the covering belt and the smoothing surface belt 145 and a plurality of pressure rollers 191 that are arranged in the traveling direction of the covering belt 200 at prescribed intervals and press the covering belt 200 from above. Consequently, the wet paper RP<SB>0</SB>paper made and formed by a papermaking net conveyor 100 is surely recycled as wrinkle-free and smooth recycled paper RP. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a recycled paper smoothing device, a paper making device, and a used paper recycling device of a used paper recycling apparatus. More specifically, the present invention is arranged at a place where used paper is generated, and the generated used paper is disposed on the spot without being disposed of. The present invention relates to a recycled paper smoothing technique in a small-sized waste paper recycling apparatus of a furniture size for recycling processing to reusable paper.

  In addition to daily work at various offices such as government offices and general enterprises, various types of used paper, so-called waste paper, are generated in daily life of ordinary households. These waste papers are discarded as trash or incinerated for disposal.

  On the other hand, various technologies for reclaiming waste paper that has been disposed of recently without being disposed of have been developed in the global increase in the momentum of effective utilization of limited earth resources.

  Most of these recycled paper recycling technologies are adopted and implemented in the paper industry. Like the normal papermaking equipment, the used paper recycling equipment has a vast site, enormous volume for the purpose of high-speed mass production and high quality of recycled paper. Investment, and a large amount of water and chemicals used for papermaking.

  In addition, waste paper recycling requires a lot of manual waste paper collection work, and this waste paper collection involves the mixing of foreign substances by many people, poor sorting due to insufficient knowledge of recycled paper, and insufficient removal of repellents. However, even if used paper is collected, in order to recycle these used paper as 100% recycled paper, work such as re-sorting and washing by a specialist is inevitable. Furthermore, waste paper such as top-secret documents is not easily collected for waste paper collection due to confidentiality issues and is incinerated, so recycling is not progressing.

  In order to solve these problems of collecting used paper, it is effective to develop a technology that can be recycled and used by the used paper generator. From this viewpoint, the applicant is described in, for example, Patent Document 1. Such a used paper recycling device has already been developed and proposed.

  This used paper recycling device is a technology that enables large-scale used paper recycling technology, such as used paper recycling factories, to be installed in small-scale stores and general households. The pulp manufacturing department that produces the used paper pulp by disaggregating and beating the paper, the paper making department that produces the recycled paper by making the used paper pulp produced in the pulp manufacturing department, and the pulp manufacturing department and the paper making department The paper-making unit comprises a paper-making process unit that makes waste paper pulp sent from the pulp production unit into wet paper, and wet paper that has been formed in this paper-making process unit. And a drying process section for drying recycled paper, both of which are in the form of a belt conveyor having a running belt for processing and transporting the used paper pulp used paper pulp.

  And the used paper is disaggregated and beaten in the pulp production section to become used paper pulp, and then this used paper pulp is transported by the running belt of the belt conveyor in the paper making section, and each of filtration dewatering, pressing dewatering and heat drying. Through the process, it becomes recycled paper. In this case, at the stage of pulping, the waste paper is decomposed to the fiber level, and the characters and diagrams described there are completely decomposed and extinguished and cannot be restored, and are composed of these characters and diagrams. It is possible to reliably prevent leakage and leakage of confidential information and personal information.

JP Patent Publication No. 2007-308837

  The present invention has been made in view of such conventional problems, and the object of the present invention is, in particular, a large establishment by further improving the configuration of the drying process section in the paper making section of the used paper recycling apparatus. In a very small waste paper processing space called a furniture-sized waste paper recycling device that can be installed not only in small-scale stores and homes, but also in wet papers formed in the paper making process part of the paper making part. An object of the present invention is to provide a recycled paper smoothing technique that can be reliably recycled as non-smooth recycled paper.

  In order to achieve this object, the recycled paper smoothing device of the used paper recycling apparatus of the present invention is a used paper recycling apparatus of a furniture size that can be placed in a place where the used paper is generated, The recycled paper is smoothed by being placed in the papermaking section where the recycled paper is produced by making the paper. The papermaking section forms papermaking at the papermaking belt conveyor section that makes wastepaper pulp into wet paper. This is provided in the drying belt conveyor unit that dries the wet paper to make recycled paper, and in the heating and drying unit of this drying belt conveyor unit, presses the entire wet paper conveyed by the smooth surface belt with uniform pressure from above A covering belt conveyor provided with a covering belt that travels while covering the entire wet paper on the smooth surface belt in a sandwiched manner with the smooth surface belt; They are arranged at predetermined intervals in the running direction of the covering belt, characterized by comprising a plurality of pressure rollers for pressing the covering belt from the upper side.

The following configuration is adopted as a preferred embodiment.
(1) The coated belt conveyor includes the coated belt in the form of an endless belt that travels while covering the entire wet paper on the smoothed belt in a sandwiched manner between the smoothed belt and the coated belt. And a drive motor for driving the vehicle.

(2) The covering belt is formed of a mesh belt composed of an infinite number of meshes capable of passing and releasing moisture evaporated from the wet paper on the smooth surface belt upward.

(3) The mesh of the mesh belt of the pressing means is set to 12 mesh to 40 mesh.

(4) The traveling speed of the mesh belt is controlled in synchronization with the traveling speed of the smooth surface belt in the drying process section.

(5) The arrangement configuration of the pressure roller can form at least a flat smoothing working surface in which the lower surface of the covering belt cooperates with the upper surface of the smoothing belt to smooth the entire wet paper web. It is set as follows.

(6) The pressure roller is in the form of a solid metal roller having an outer diameter dimension capable of securing a pressure roller arrangement interval capable of forming and maintaining the smoothing surface of the coated belt, and is freely rotated. Rotation supported as possible.

(7) In the drying step, the smooth surface belt that conveys and supports the lower surface of the wet paper is heated from below by a heater.

(8) The heater is in the form of a heater plate that is in sliding contact with the side of the smooth surface belt opposite to the wet paper carrying support surface, and the wet paper on the smooth surface belt is heated by the heater plate. The surface belt is indirectly heated and dried.

Further, the papermaking apparatus of the used paper recycling apparatus of the present invention is a papermaking machine constituting a furniture-sized used paper recycling apparatus that can be placed in a place where the used paper is generated. A paper machine for producing recycled paper,
Drying the papermaking belt conveyor section that makes wet paper by making a slurry-like pulp suspension coexisting with water and waste paper pulp sent from the above pulp production equipment, and papermaking formed by this papermaking belt conveyor section A drying belt conveyor unit that is recycled paper, and a dewatering roll unit that squeezes and dehydrates the wet paper in the linkage unit of the papermaking belt conveyor unit and the drying belt conveyor unit. Recycled paper smoothing processing means for processing and discharging wet paper formed by the papermaking belt conveyor unit as smooth recycled paper is provided, and this recycled paper smoothing processing means is constituted by the above-described recycled paper smoothing device. It is characterized by that.

  Further, the used paper recycling apparatus of the present invention is a paper manufacturing unit for producing used paper pulp by breaking up and beating the used paper in a furniture-sized device case, and paper making and recycling the used paper pulp manufactured by this pulp manufacturing department. A paper making unit that manufactures paper and a control unit that drives and controls the pulp manufacturing unit and the paper making unit are provided. The paper making unit includes the paper making apparatus.

  The recycled paper smoothing device of the used paper recycling apparatus of the present invention has a uniform pressure from above on the entire wet paper transported by the smooth surface belt in the heating and drying section of the drying belt conveyor section constituting the drying section of the paper making section. The pressing means is in the form of pressing means, and the pressing means includes a covering belt conveyor provided with a covering belt that travels in a state where the entire wet paper on the smooth belt is sandwiched between the smooth belt and the covering. The belt is arranged at predetermined intervals in the belt running direction, and includes a plurality of pressure rollers that press the coated belt from above, so that it can be used not only in large offices, but also in small-scale stores and general households. In a very small waste paper processing space, which is a container-sized waste paper recycling device that can also be installed, the wet paper produced in the paper making process section must be reliably recycled as smooth recycled paper without wrinkles. It can be.

  In other words, the wet paper formed by paper making in the paper making belt conveyor section (paper making process section) that makes waste paper pulp into wet paper has a smooth surface in the heating and drying section of the drying belt conveyor section that constitutes the subsequent drying process section. When being dried by heating while being conveyed by the belt, the whole is pressed with a uniform pressure from above by a recycled paper smoothing device in the form of a pressing means.

  In this case, the pressing means includes a coated belt conveyor including a coated belt that travels while the entire wet paper on the smooth belt is sandwiched between the smooth belt and a predetermined interval in the traveling direction of the coated belt. And the wet paper on the smooth surface belt passing through the heating and drying unit is covered from above by a covering belt conveyor. At the same time, by a predetermined pressurizing force by a plurality of continuously arranged pressure rollers, a heat drying process is performed while being sandwiched in a sandwich shape with a uniform pressure from above and below.

  In other words, the wet paper is heated and dried while being held in a flat state by a sandwich structure having a predetermined pressure, so that wrinkles and warpage generated in the wet paper in the previous paper making process are effectively eliminated and removed. In addition, the generation of wrinkling and warping of the wet paper due to the heat drying action is effectively prevented, and a smooth recycled paper as a whole can be regenerated.

  Further, the covering belt of the covering belt conveyor is formed of a reticulated belt composed of innumerable meshes capable of passing and releasing moisture evaporated from the wet paper on the smooth surface belt to the upper side. Nevertheless, the generated steam due to the heating of the wet paper can efficiently rise and dissipate, and the drying process can be facilitated.

  Furthermore, by controlling the traveling speed of the mesh belt constituting the covering belt in synchronization with the traveling speed of the smooth surface belt in the drying step, the wet paper is stably maintained in the sandwich structure, It can be heat-dried.

1 is a front sectional view showing an overall schematic configuration of a used paper recycling apparatus according to an embodiment of the present invention. It is side surface sectional drawing which shows the whole schematic structure of the used paper recycling apparatus similarly. It is a circuit diagram which shows the used paper pulp circulation path structure of the beating part of the used paper recycling apparatus. It is a block diagram which shows the structure of the pulp concentration adjustment part of the used paper recycling apparatus. It is a perspective view which shows the whole schematic structure of the paper making part of the used paper recycling apparatus. It is a perspective view which shows the external appearance structure of the used paper recycling apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, the same reference numeral indicates the same component or element.

Embodiment 1
A used paper recycling apparatus according to the present invention is shown in FIG. 1 to FIG. 6, and this used paper recycling apparatus 1 is specifically disposed at a place where used paper is generated, and without discarding the generated used paper UP. , A device that recycles paper into reusable paper on the spot, and used paper UP includes used documents that have been used or no longer needed, such as confidential documents of public offices / general companies, private documents of general households, etc. To do.

  The used paper recycling apparatus 1 has a size as shown in FIG. 6, that is, a small size and size equivalent to the fixtures such as book shelves, lockers, office desks, copiers, and personal computers arranged and used in the office. As shown in FIG. 1, the pulp making unit 2, the pulp concentration adjusting unit 3, the paper making unit (paper making device) 4, and the device control unit (control unit) 5 are configured as main parts. A recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 having a characteristic configuration according to the present invention is provided.

  These device components 2 to 5 are designed to be compactly accommodated in the device case 6. As described above, the device case 6 is of a furniture size, and the specific shape and dimensions are appropriately designed according to the purpose and application. The apparatus case 6 of the illustrated embodiment is a substantially rectangular parallelepiped box having the shape and size of a copying machine used in an office or the like, and used paper UP is put into the top plate portion of the apparatus case 6. An opening 7 for opening and closing is provided so as to be openable and closable, and a discharge port 8 for discharging recycled paper RP, RP,. Further, a recycled paper receiving tray 9 for receiving recycled paper RP, RP,... Discharged from the outlet 8 is provided at the lower edge portion of the outlet 8 so as to be removable.

  The pulp manufacturing unit 2 beats the used paper UP in a process part where the used paper UP is disaggregated and beaten to produce the used paper pulp, and the used paper UP is agitated and crushed to disaggregate the used paper UP. It consists of a beating unit 21.

  As shown in FIG. 2, the disaggregation tank 25 is provided with the input port 7 for supplying and supplying waste paper UP to the ceiling wall, and the bottom wall of the disaggregation tank 25 for discharging the disaggregated waste paper pulp UPP to the downstream side. An outlet 28 is provided. The internal volume of the disaggregation tank 25 is set according to the number of used paper UPs to be stirred at a time. In the illustrated embodiment, about 98 liters of water is added and a disaggregation tank 25 having a volume capable of stirring (batch processing) about 500 sheets (about 2000 g) of A4-sized PPC (plain paper copier) waste paper UP at a time. It is said that. In this case, the concentration of the used paper pulp UPP to be disaggregated is about 2%. In addition, this density | concentration adjustment is performed by the water supply from the water supply apparatus 27, and this water supply apparatus 27 makes a part of the pulp concentration adjustment part 3 mentioned later.

  The insertion port 7 has a structure that can be opened and closed with respect to the outside of the case cover 6 a of the device case 6. The discharge port 28 can be opened and closed by an on-off valve 29, and can communicate with a waste paper pulp circulation path 49 described later. It should be noted that the discharge port 28 has a contraindication for removing various contraindications that obstruct the next step, such as a clip used to bind used paper UP, UP,..., A binding tool such as a stapler needle. A product filter 30 is provided.

  Specifically, the opening / closing valve 29 is opened / closed by the crank mechanism 36 operated by the drive motor 35. Specifically, an electric motor is used as the drive motor 35, and the drive motor 35 is electrically connected to the apparatus control unit 5.

  The stirring device 26 is provided inside the disaggregation tank 25 and includes a stirring impeller 40 and a drive motor 41.

  The agitation impeller 40 has a rotating shaft 40a that is rotatably supported at the center of the bottom surface of the disaggregation tank 25, and is provided so as to be horizontally rotatable. The lower end of the rotating shaft 40a includes a transmission pulley 42a and a transmission belt 42b. The drive shaft 41a of the drive motor 41 is drive-coupled via a transmission means 42 including a transmission pulley 42c.

  The water supply device 27 supplies water W to the disaggregation tank 25 and constitutes a beating concentration adjusting unit 3A of the pulp concentration adjusting unit 3 as described later.

  As shown in FIG. 1, the water supply device 27 of the illustrated embodiment includes a white water recovery tank 45, a beating concentration adjusting water supply pump 46, and a papermaking concentration adjusting water supply pump 47. As will be described later, the white water collection tank 45 collects white water W (ultra-low concentration pulp water filtered by a paper making net when paper making) that is filtered and dehydrated in the paper making unit 4. The white water W collected in 45 is supplied to the disaggregation tank 25 by the water supply pump 46 and to a concentration adjusting tank 85 to be described later by the water supply pump 47.

  In addition, a weight sensor 48 is provided at the bottom of the disaggregation tank 25 to measure and control the amount of waste paper UP, UP,... The weight sensor 48 is electrically connected to the device controller 5.

  The weight sensor 48 of the illustrated embodiment includes a load cell, and is configured to sense and measure the total weight of the weight of the disaggregation tank 25 and the weight of the used paper UP, UP,... Has been.

  The concrete control configuration in the disaggregation unit 20 is as follows. First, when the input port 7 is opened by an operator and used paper UP, UP,... Is input into the disaggregation tank 25, the weight is detected and measured by the weight sensor 48. Then, when the predetermined weight (number) is reached, the operator is notified by sound and / or display. When the operator closes the charging port 7 in accordance with this display, the water supply device 27 is driven, and the weight of the used paper UP, UP,. The amount corresponding to the number of sheets) is supplied to the disaggregation tank 25.

  In addition, when the operator closes the input port 7 after inputting an arbitrary amount of waste paper UP, UP,... (An amount smaller than the predetermined weight (number)) from the input port 7 to the disaggregation tank 25, The weight is sensed and measured by the weight sensor 48, the water supply device 27 is driven, and the water pump 46 supplies the amount of water W corresponding to the measurement result from the white water recovery tank 45 to the disaggregation tank 25. .

  In the illustrated embodiment, as described above, when a maximum of about 500 sheets (about 2000 g) of A4-sized PPC waste paper UP is put into the disaggregation tank 25, at that time, a sound and / or display is given to the operator. When the charging port 7 is closed, approximately 98 liters of water is added by the water supply device 27 or an arbitrary amount (an amount smaller than the predetermined weight (number)) of the used paper UP, UP,. Even in this case, the amount of water corresponding to the amount of waste paper input is added by the water supply device 27, and the concentration of the waste paper pulp UPP to be disaggregated is controlled and adjusted to about 2%.

  Thus, in the stirring device 26, the used paper UP, UP,... Charged into the disaggregation tank 25 from the charging opening of the device case 6, that is, the charging port 7, is caused by the forward / reverse operation of the stirring impeller 40 by the drive motor 41. In the water supplied from the water supply device 27, the mixture is stirred and mixed for a predetermined time (10 to 20 minutes in the illustrated embodiment), whereby the used paper UP, UP,. It becomes.

  The discharge port 28 of the disaggregation tank 25 is closed by the on-off valve 29 when the disaggregation unit 20 is operated, and the inflow of the used paper UP and the used paper pulp UPP from the disaggregation tank 25 to the used paper pulp circulation path 49 is prevented. On the other hand, during the operation of the beating unit 21 described later, the discharge port 28 is opened by the on-off valve 29, and the inflow and circulation circulation of the used paper pulp UPP from the disaggregation tank 25 to the used paper pulp circulation path 49 are allowed.

  The beating unit 21 is a process part for beating the waste paper UP disaggregated by the disaggregation unit 20, specifically, pressurizing the waste paper UP disaggregated by the disaggregation unit 20, and characters on the waste paper UP, Inks to form figures, etc. (printing inks that form letters, figures, etc. on used paper UP by various printing technologies, or inks, etc., that form letters, figures, etc. on used paper UP by a writing instrument such as a pencil, ballpoint pen, or fountain pen) Are included) and are refined (microfiber).

  The beating unit 21 includes a grinder 50 as a main part. As shown in FIG. 3, the attritor 50 includes a pair of beating disks 51 and 52 that are rotationally driven as main parts, and the pair of beating disks 51 and 52 includes a beating action surface 51 a, 52a is concentrically opposed to each other with a minute beating gap G.

  Further, the beating gap G between the beating action surfaces 51a and 52a of the attritor 50 is set so as to gradually become narrower from the initial attritor 50 in the beating process toward the final attritor 50. Has been.

  In the beating unit 21 according to the present embodiment, as shown in FIG. 3, a waste paper pulp circulation path 49 in which a single grinder 50 is arranged is formed, whereby the waste paper pulp UP is passed through the grinder 50. It is a circulation type that is beaten while being circulated for a predetermined time.

  By performing the beating process by the used paper pulp circulation path 49, an infinitely long used paper pulp beating process path is basically formed with no limit on the length, despite the small and narrow process space in the apparatus case 6 of the furniture size. Thus, it becomes possible to secure a beating process space comparable to the beating process in a large-scale apparatus, and an optimum beating effect can be obtained according to the purpose.

  Further, in connection with the fact that one grinder 50 performs the beating process throughout all the steps of the beating process, this one grinder 50 has a plurality of parts from the initial grinder to the final grinder in the beating process. Also functions as a table grinder. Specifically, the beating gap G of the beating action surfaces 51a and 52a of the grinding machine 50 is controlled and adjusted so as to gradually narrow from the initial stage to the final stage of the beating process.

  As shown in FIG. 2, the attritor 50 of the illustrated embodiment is provided in an apparatus body 54 constituting the apparatus case 6 adjacent to the disaggregation tank 25 of the disaggregation unit 20, and also illustrated in FIG. 3. As described above, the beating tank 55 that can communicate with the disaggregation tank 25 of the disaggregation unit 20, the pair of beating disks 51 and 52 that are relatively rotatably provided in the beating tank 55, and the pair of beating disks 51 , 52 and a rotational drive source 56 that relatively rotates, and a gap adjusting means 57 that adjusts the beating gap G between the pair of beating disks 51 and 52.

  The beating tank 55 has a sealed cylindrical shape capable of accommodating the pair of beating disks 51 and 52, and discharges the beating waste paper pulp UPP to the downstream side, a supply port 55a for supplying the used paper pulp UPP from the upstream side. It has a discharge port 55b.

  Specifically, the supply port 55a is opened in the vertical direction at the bottom center of the beating tank 55, and the discharge port 55b is opened in the horizontal direction on the cylindrical side of the beating tank 55. . As shown in FIG. 3, the supply port 55a and the discharge port 55b are connected to the disaggregation tank 25 of the disaggregation unit 20 through circulation pipes 49a and 49b, respectively, and the discharge port 55b Further, it is possible to communicate with the used paper pulp collecting tank 60 through the discharge pipe 59.

  Reference numeral 61 denotes a direction switching valve. By the switching operation of the direction switching valve 61, the used paper pulp UPP discharged from the discharge port 55b is selectively returned to the disaggregation tank 25 or used paper pulp collecting tank 60. To be recovered. The direction switching valve 61 is specifically composed of an electromagnetic valve, and is electrically connected to the device control unit 5.

  One of the pair of beating disks 51 and 52 is a fixed-side beating disk fixedly provided in the rotation direction, and the other is a rotatable rotating beating disk. In the illustrated embodiment, the upper beating disk 51 is on the rotating side and the lower beating disk 52 is on the fixed side, and the upper beating disk 52 is rotated on the upper side with respect to the lower fixed beating disk 52. The side beating disks 51 are concentrically arranged with a small beating gap G so as to be rotatable. The rotation-side beating disk 51 is drivably coupled to a drive motor 56 via a rotation main shaft 64 that is rotatably supported on the fixed side of the device body 54 and is movable in the axial direction.

  Although not specifically shown, the rotation main shaft 64 is rotatably supported by a lifting member of the gap adjusting means 57, and the rotation side beating disk 51 is concentrically and integrally formed at the tip thereof. And a base end portion of the drive motor 56 is connected to the rotation shaft of the drive motor 56 so as to be integrally movable in the rotation direction and relatively movable in the axial direction.

  The drive motor 56, which is a rotational drive source, relatively rotates the pair of beating disks 51, 52. Specifically, an electric motor is used, and the drive motor 56, which is the drive source, controls the apparatus. It is electrically connected to the part 5.

  The opposing surfaces 51a and 52a of the two beating disks 51 and 52 that form the minute beating gap G cooperate to form a beating action surface. These opposing beating action surfaces 51a and 52a are in the form of a grindstone surface in which a large number of abrasive grains are bonded together by a binder. Further, as shown in FIG. 3, the two beating action surfaces 51a and 52a are formed into tapered surfaces whose diameters are continuously increased in the opposing directions, and the outer circumferential edges are parallel to each other. These annular flat surfaces form the beating gap G.

  In other words, in the pair of beating disks 51, 52, an inlet 70 that is coaxially connected to the beating tank supply port 55a is formed at the central portion of the beating action surface 52a of the fixed-side beating disk 52, and Two annular flat surfaces formed on the outer peripheral edge portions of the beating action surfaces 51a and 52a of the pair of beating disks 51 and 52 communicate with the discharge port 55b of the beating tank 55 and have the beating gap G. Is forming.

  Further, a plurality of blades 72, 72,... Are provided on the outer periphery of the rotation-side beating disk 51 at a predetermined interval in the circumferential direction, and these blades 72, 72,. The used paper pulp UPP discharged from the outlet 71 has a pumping action to extrude it toward the discharge port 55b of the beating tank 55 by centrifugal force.

  Thus, in a state where the rotation-side beating disk 51 is rotationally driven with respect to the fixed-side beating disk 52 by the drive motor 56 that is a drive source, the supply port 55a of the beating tank 55 from the disaggregation tank 25 of the disaggregation unit 20; Waste paper pulp UPP supplied to the beating space B through the inlet 70 flows into the beating space B from the inlet 70 and passes through the beating space B, and is rotated by the beating action surfaces 51a and 52a that rotate relatively. In addition to being subjected to the pressure beating action, the inks that form letters, figures, etc. on the used paper UP are ground and refined, and then discharged from the outlet 71 through the discharge port 55b of the beating tank 55.

  When discharged from the outlet 71, the waste paper pulp UPP is further subjected to a pressure beating action at the outlet 71 portion having the beating gap G, and is refined to a predetermined micron size defined by the beating gap G ( Microfiber).

  In this regard, in the present embodiment, as described above, in connection with the adoption of the circulation type beating process (see FIG. 3) in which one grinder 50 is disposed in the waste paper pulp circulation path 49. In other words, in connection with the fact that the one grinder 50 functions as a plurality of grinders from the initial grinder to the final grinder in the beating process, The gap G is controlled and adjusted by the gap adjusting means 57 so as to gradually narrow from the initial stage to the final stage of the beating process.

  Although not specifically shown, the gap adjusting means 57 is configured to control and adjust the beating gap G of the beating disks 51 and 52 by relatively moving the pair of beating disks 51 and 52 in the rotation axis direction. The main part is composed of a moving means (not shown) for moving the rotating side beating disk 51 in the rotation axis direction, that is, the axial direction of the rotation main shaft 64, and a drive source 66 for driving the moving means. Specifically, an electric motor is used as the drive source, and the drive motor 66 is electrically connected to the apparatus control unit 5.

  The rotation of the electric motor 66 causes the rotation main shaft 64 to move up and down via the moving means, whereby the rotation-side beating disk 51 integrated with the rotation main shaft 64 moves in the vertical direction with respect to the fixed-side beating disk 52. That is, the beating gap G between the beating disks 51 and 52 is controlled and adjusted by moving in the rotation axis direction.

  For this purpose, a position detection sensor (not shown) for detecting the ascending / descending position of the rotating side beating disk 51 is provided, and the drive motor 66 is driven and controlled by the detection result of the position detection sensor. The position detection sensor is electrically connected to the device controller 5.

  The control adjustment of the beating gap G of the beating disks 51 and 52 by the gap adjusting means 57 is performed in conjunction with the circulation pump 69 which is the circulation means in the circulation type beating process in the used paper pulp circulation path 49 shown in FIG. Is called.

  That is, in FIG. 3, the used paper pulp UPP that has been disaggregated by the disaggregation unit 20 is circulated in the used paper pulp circulation path 49 by the circulation pump 69, and the beating process by the mill 50 is performed. The beating gap G of the 50 beating action surfaces 51a, 52a is configured to be gradually narrowed by the gap adjusting means 57 from the initial stage to the final stage of the beating process.

  Further, in relation to the fact that the waste paper pulp circulation path 49 includes the disaggregation tank 25 of the disaggregation unit 20, in the beating process, the stirring device 26 of the disaggregation unit 20 is driven and controlled, and the disaggregation unit 20 is configured to be driven simultaneously with the beating unit 21. That is, in the circulation type beating process, the used paper pulp UPP flows out from the disaggregation tank 25 to the used paper pulp circulation path 49, while the used paper pulp UPP that has been beaten by the grinder 50 flows into the disaggregation tank 25. Since used paper pulp UPP having different beating degree is mixed in 25, the beating degree of the used paper pulp UPP in the disaggregation tank 25 is made uniform by the stirring action of the stirring device 26, and the beating process is promoted.

  The used paper pulp collecting tank 60 is a part that collects the used paper pulp UPP refined to a predetermined size by the beating unit 21, and the recovered paper pulp UPP collected here is a paper making unit 4 that performs the next paper making process. Is sent to the pulp suspension PS mixed and adjusted to a papermaking concentration corresponding to the finished paper quality of the recycled paper RP to be recycled by the pulp concentration adjusting unit 3.

  The pulp concentration adjusting unit 3 is a gravimetric type that adjusts the mixing ratio of the used paper UP and the water W to be fed into the apparatus by weight measurement to adjust the concentration of the used paper pulp UPP supplied to the paper making unit 4. Specifically, as shown in FIG. 4, a beating concentration adjusting unit 3A, a paper making concentration adjusting unit 3B, and a pulp concentration controlling unit 3C are provided.

  The beating concentration adjusting unit 3A adjusts the beating concentration of the used paper pulp UPP in the pulp manufacturing unit 2 in accordance with the beating efficiency of the beating unit 21, and as described above, the feed pump for adjusting the beating concentration of the water supply device 27. 46 and the beating concentration control unit 75 are configured as main parts.

  The supply amount of the white water W by the water supply pump 46 of the beating concentration adjusting unit 3A is, for example, the beating unit 21 in which the beating concentration of the used paper pulp UPP disaggregated and beaten by the stirring device 26 executes the beating step which is the next step. It is desirable that the maximum concentration allowed for the beating ability of the grinder 50 is set, and in the illustrated embodiment, the beating concentration is set to about 2% as described above.

  Then, as described above, the beating concentration control unit 75 drives and controls the water supply pump 46 so as to supply a necessary amount of water W to the disaggregation tank 25 according to the measurement result from the weight sensor 48. The beating concentration control unit 75 constitutes a part of the device control unit 5 as described later.

  The paper making concentration adjusting unit 3B adjusts the paper making concentration of the used paper pulp UPP in the paper making unit 4 to an appropriate concentration corresponding to the finished paper quality of the recycled paper RP to be recycled. It is set as the structure which adjusts the density | concentration of the used waste paper pulp UPP in a division | segmentation format, and is provided with the division extraction part 80, the suspension preparation part 81, and the papermaking density | concentration control part 82 as a main part.

  The classification extraction unit 80 extracts a predetermined small amount from the total amount of the used paper pulp UPP manufactured by the pulp manufacturing unit 2 in the previous process, and extracts the used paper pulp UPP from the used paper pulp recovery tank 60 to adjust the concentration. 85 is provided with a waste paper pulp supply pump 86 for sorting and extraction.

  The suspension preparation unit 81 adds a predetermined amount of water W for concentration adjustment to a predetermined small amount of waste paper pulp UPP that has been sectioned and extracted by the section extraction unit 80, thereby suspending a pulp suspension having a predetermined concentration. The liquid PS is prepared, and includes the water supply pump 47 of the water supply device 27 described above as a main part.

  Although not specifically shown, a weight sensor 87 made of a load cell is provided at the bottom of the concentration adjustment tank 85 as in the case of the disaggregation tank 25 described above, and is supplied into the concentration adjustment tank 85. The weight sensor 87 is electrically connected to the apparatus control unit 5. The weight sensor 87 is electrically connected to the apparatus control unit 5.

  The paper making density control unit 82 controls the section extraction unit 80 and the suspension preparation unit 81 in conjunction with each other and constitutes a part of the apparatus control unit 5 and executes the following paper making density adjustment process. As described above, the pumps 86 and 47 of the section extraction unit 80 and the suspension preparation unit 81 are controlled in conjunction with each other.

  That is, first, from the total amount of used paper pulp UPP recovered from the beating unit 21 to the used paper pulp recovery tank 60 (in the illustrated embodiment, about 2000 g of used paper UP + 100 l of water W), the used paper pulp supply pump 86 performs predetermined processing. A quantity (1 l in the illustrated embodiment) of the used paper pulp UPP is divided and transferred to the concentration adjusting tank 85. Then, the weight is sensed and measured by the weight sensor 87, and the result is sent to the device controller 5.

  Subsequently, the water W for dilution is supplied from the white water recovery tank 45 to the concentration adjustment tank 85 by the water supply pump 47 in accordance with a predetermined amount of the sorted waste paper pulp UPP (9 l in the illustrated embodiment). (Actually, by weight measurement of the weight sensor 87)).

  As a result, in the concentration adjusting tank 85, the waste paper pulp UPP having a beating concentration (2% in the illustrated embodiment) is mixed and diluted with the water W to have a predetermined concentration (about 0.2% in the illustrated embodiment). A pulp suspension PS having a concentration (target concentration) is prepared by mixing.

  Note that the target concentration of the pulp suspension PS to be prepared is set in consideration of the paper making capability in the paper making unit 4 described later based on experimental data performed in advance. In the case of the illustrated embodiment, the above-described target concentration is set. Thus, the concentration is set to about 0.2%.

  Thus, the pulp suspension PS prepared in the concentration adjustment tank 85 to the target papermaking concentration (0.2%) is transferred from the concentration adjustment tank 85 to the pulp supply tank by the first suspension supply pump 88. It is transported and supplied to 89 and stored on standby for the paper making unit 4 in the next process. Thereafter, this papermaking density adjustment step is repeated in the same manner for the entire amount of used paper pulp UPP in the used paper pulp collecting tank 60. The pulp supply tank 89 is provided with a second suspension supply pump 90 for sending the pulp suspension PS to the papermaking belt conveyor unit 95 of the papermaking unit 4.

  Further, a stirring device 91 is provided in the pulp supply tank 89, and by the stirring action of this stirring device 87, the paper making concentration of the entire pulp suspension PS that is stored on standby is made uniform and held at a constant value. The

  As described above, the density adjustment by the papermaking density adjusting unit 3 is not a batch type, but is performed in a segmented form, that is, a dispensing form. Significant reduction in size is also possible, and further, the waste paper recycling apparatus 1 as a whole can be made compact.

  The pulp concentration control unit 3C drives and controls the beating concentration adjusting unit 3A and the paper making concentration adjusting unit 3B. Specifically, the pulp concentration control from the beating concentration control unit 75 of the beating concentration adjusting unit 3A. Receives information (input amount of used paper UP, amount of water supplied to the disaggregation tank 25, beating concentration of used paper pulp UPP, etc.), and targets the concentration of used paper pulp UPP manufactured by the pulp manufacturing unit 2 according to this control information Paper density control information (target paper density of used paper pulp UPP, classified extraction amount of used paper pulp UPP from the used paper pulp recovery tank 60, water supply amount to the density adjusting tank 85, etc.) for making the value (paper density) The papermaking density control unit 82 of the adjustment unit 3B is sent to the papermaking density control unit 82, thereby executing the papermaking density adjustment process described above.

  The papermaking unit 4 is a process part for producing recycled paper RP by papermaking the used paper pulp UPP produced by the pulp production unit 2, and as shown in FIGS. 1 and 5, a papermaking belt conveyor unit 95, a dewatering roll unit 96 and the drying belt conveyor unit 97 as main parts, and the drying belt conveyor unit 97 includes a recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing) which is a characteristic configuration according to the present invention described above. Processing means) 10 is provided.

  The papermaking belt conveyor unit 95 is a portion that makes wet paper by making a slurry-like pulp suspension PS in which water W and wastepaper pulp UPP coexisting from the pulp supply tank 89 of the pulp manufacturing unit 2 coexist. The net conveyor 100 and the pulp supply part 101 are comprised as a main part.

  The papermaking net conveyor 100 conveys a pulp suspension while making a pulp suspension, and a net belt 105 having a papermaking net structure composed of numerous meshes for filtering and dewatering the pulp suspension PS is linearly directed in the running direction. It is set as the arrangement composition which runs in a shape.

  Specifically, the papermaking net conveyor 100 includes the mesh belt 105 in the form of an endless belt that travels while making the pulp suspension PS, and a drive motor 106 that drives the mesh belt 105 to travel. It becomes.

  The sheet material of the mesh net structure constituting the mesh belt 105 is made of a material that allows the pulp suspension PS to be appropriately filtered and dehydrated by the innumerable meshes of the mesh mesh structure. Preferably, polypropylene (PP), polyethylene It is made of a material having excellent corrosion resistance such as terephthalate (PET), polyamide (PA) (generally called “nylon” (registered trademark)), or stainless steel (SUS). This is a PET mesh belt 105 having excellent properties.

  Further, the paper making net structure constituting the mesh belt 105 is preferably a fine mesh or a fine smooth mesh, and specifically selected according to the characteristics of the target paper. Points are taken into account.

(1) Mesh size of mesh belt 105:
The mesh size of the mesh belt 105 is preferably set to 25 mesh to 80 mesh, and the mesh belt 105 of 50 mesh is adopted in the illustrated embodiment.

(2) Mesh diameter of mesh belt 105:
The mesh of the mesh belt 105 greatly affects not only the number of meshes (size) but also the wire diameter of the mesh. Even if the number of meshes is the same, if the wire diameter is large, the mesh size will be small, and if it is thin, the mesh size will be large. This is expressed by the mesh space ratio or air permeability (cm ³ / cm ² / sec). The

  For example, when the mesh is fine and the air permeability is poor, the drainage rate is also deteriorated. As a result, the shape and size of the pulp supply unit 101 described later becomes longer in the traveling direction of the mesh belt 105, leading to an increase in the size of the apparatus. On the contrary, if the mesh is rough and the air permeability is too good, the pulp supply unit 101 is short and the apparatus is small, but the recycled paper RP to be recycled has a rough paper quality, and smoothness of the front and back surfaces. The difference between the two becomes large, and the paper has poor smoothness.

  In consideration of various conditions including the above, the mesh belt 105 has a small mesh wire diameter, a large number of meshes, and aeration to prevent the waste paper pulp UPP from falling off the mesh of the mesh belt 105 during papermaking. A mesh structure that does not drop the degree is preferable. As the mesh belt 105 of the illustrated embodiment, a 50 mesh mesh net belt 105 made of plain mesh is used. According to this mesh belt 105, it has been experimentally found that good paper quality with no problem in writing can be obtained.

  Furthermore, the width dimension of the mesh belt 105 is set to a predetermined width dimension slightly larger than the width dimension of the recycled paper RP to be manufactured by making the pulp suspension PS.

  As shown in FIGS. 1 and 5, the mesh belt 105 is suspended and supported so as to be able to rotate by way of a drive roller 107, a dewatering roll unit 96, a driven roller 108 and a support roller 109. Via the drive motor 106.

  The length of the paper making process in the mesh belt 105 is the length in the upper running direction of the mesh belt 105 in the apparatus case 6 having the above-mentioned fixture size (in the illustrated case, from the pulp supply unit 101 to the dewatering roll unit 96 in FIG. 1). (Length in the left-right direction) is set.

  The traveling speed of the mesh belt 105 is set in consideration of various conditions in the paper making process, and is preferably set to 0.1 m / min to 1 m / min. It is set to 2 m / min. Incidentally, the traveling speed of this type of papermaking belt in a large-scale factory such as a conventional used paper recycling factory is set to at least 100 m / min or more, and is set to a speed far exceeding 1000 m / min in the early one.

  As shown in FIGS. 1 and 5, the mesh belt 105 has an arrangement configuration in which the mesh belt 105 travels in an upwardly inclined manner and linearly in the traveling direction so that the length of the papermaking process in a limited installation space is possible. In addition, the filtration and dewatering rate is improved in relation to the netting net structure of the mesh belt 105.

  The drive motor 106 that travels and drives the mesh belt 105 is specifically an electric motor, and is electrically connected to the apparatus controller 5. The drive motor 106 is also used as a travel drive source for a dewatering roll unit 96 and a drying belt conveyor unit 97 which will be described later.

  The pulp supply unit 101 is a part for supplying the pulp suspension PS from the pulp manufacturing unit 2 onto the mesh belt 105, although the specific structure is not shown in the drawing, The PS is configured to be uniformly spread on the upper surface of the mesh belt 105 and supplied. The pulp supply unit 101 is provided at the papermaking process start end position of the papermaking net conveyor 100.

The pulp suspension PS supplied from the pulp supply tank 89 to the pulp supply unit 101 by the second suspension supply pump 90 is stored in the pulp supply unit 101 by a predetermined amount, and the retention action causes the suspension. Then, it is diffused uniformly on the upper surface of the mesh belt 105. The pulp suspension PS uniformly spread on the upper surface of the mesh belt 105 is subjected to its own weight filtering action by the mesh of the mesh belt 105 while being transported together with the mesh belt 105 by the traveling action of the mesh belt 105 in the direction of the arrow. Thus, the wet paper web RP ₀ (in the illustrated embodiment, moisture content of 90 to 85%) is obtained.

  The white water W filtered and dehydrated by the mesh belt 105 (ultra-low concentration pulp water filtered by the paper making net when making paper) is recovered in the white water recovery tank 45 of the water supply device 27 as described above. .

The dewatering roll unit 96 constitutes a portion for squeezing and dewatering the wet paper RP ₀ on the mesh belt 105 in the linkage portion of the papermaking belt conveyor unit 95 and the drying belt conveyor unit 97 described later.

  Specifically, a smooth surface belt 145 (to be described later) of the drying belt conveyor unit 97 on the downstream side and a mesh belt 105 of the papermaking belt conveyor unit 95 on the upstream side are vertically moved as shown in FIGS. The upper and lower adjacent portions of the smooth surface belt 145 and the mesh belt 105 are used as the link portions, and the dewatering roll 96 is connected to the mesh belt 105 and the smooth surface belt. It is set as the structure which rolls and squeezes 145 in the shape of pinching from both upper and lower sides.

  The dewatering roll unit 96 includes at least a preliminary dewatering roll unit 96A and a main dewatering roll unit 96B as main parts.

  As shown in FIG. 1, the illustrated dewatering roll unit 96 includes a preliminary dewatering roll unit 96 </ b> A, a main dewatering roll unit 96 </ b> B, and an angle defining roll unit 96 </ b> C as auxiliary means.

Preliminary dewatering roll unit 96A is for squeezing and dewatering preliminarily the wet paper RP ₀ on the mesh belt 105, specifically, the preliminary dewatering roll 120 rolling contact from the lower side to the mesh belt 105, the preliminary A pre-squeezing roll pair 122 comprising a pre-press roll 121 that rolls and presses the smooth surface belt 145 from above with respect to the dewatering roll 120 is provided.

The mesh belt 105 and the smooth surface belt 145 are squeezed and squeezed in a pinched form with a predetermined preliminary pressure from both the upper and lower sides by the pair of preliminary pressing rolls 122 including the preliminary dewatering roll 120 and the preliminary press roll 121, and The moisture contained in the wet paper RP ₀ on the mesh belt 105 is preliminarily dehydrated and removed.

Preliminary pressure in this case, that preliminary squeezing force of the preliminary dewatering roll unit 96A for preliminarily squeezing and dewatering the wet paper RP ₀ on the mesh belt 105 is, as not Shimawa collapse is wet paper RP ₀ containing a large amount of water In the illustrated embodiment, the preliminary squeezing force is set so that the moisture content of the wet paper on the mesh belt 105 after preliminary dehydration is in the range of 80 to 75%. .

The dewatering roll unit 96B is a main paper RP ₀ on the mesh belt 105 preliminarily dehydrated by the predewatering roll unit 96A to depressurize and dehydrate it into a dry paper (recycled paper) RP having a predetermined moisture content. Specifically, the main pressing roll 126 is composed of a main dewatering roll 125 that rolls into contact with the mesh belt 105 from below, and a main press roll 126 that rolls and presses the smooth surface belt 145 from above on the main dewatering roll 125. At least one set of the roll pair 127 is provided.

Then, the net belt 105 and the smooth surface belt 145 are squeezed in a pinched manner with a predetermined main pressure from both the upper and lower sides by the main pressing roll pair 127 including the main dewatering roll 125 and the main pressing roll 126, The moisture contained in the wet paper RP ₀ on the mesh belt 105 is finally dehydrated and removed to obtain dry paper with a predetermined moisture content, that is, recycled paper RP.

The final squeezing force of the final dewatering roll unit 96B for final squeezing and dewatering the wet paper RP ₀ on the pressure, i.e. the mesh belt 105 in this case is certainly given dewatering effect for wet paper RP ₀ preliminary dewatering is obtained In the illustrated embodiment, the water content of the dry paper (recycled paper) RP on the net belt 105 after the final dehydration is set in the range of 70 to 65%.

  Although not specifically shown, the rolls 120, 121, 125, and 126 in the dewatering roll unit 96 are drivingly connected to a single driving motor 106 by a driving connecting means including a gear mechanism, and all the rolls 120, 121 are connected. , 125, 126 are driven to rotate in conjunction with each other.

  In this case, the rolls 120, 121, 125, and 126 are meshed between the outer peripheral surfaces of the mesh belt 105 that is squeezed and pressed between the outer peripheral surfaces, and the contact surfaces of the smooth surface belt 145 (the lower surface of the mesh belt 105 and the smooth surface belt 145. The outer peripheral surfaces of the upper and lower rolls 120 and 125 and the outer peripheral surfaces of 121 and 126 are controlled so as to be in rolling contact with each other with a slight rotational speed difference.

Specifically, the rotational speed of the upper spare and main press rolls 121 and 126 is set to be slightly higher than the rotational speed of the lower preliminary and main dewatering rolls 120 and 125, and thereby the smooth surface belt 145. Is set to be slightly higher than the traveling speed of the mesh belt 105. With this configuration, as will be described later, the wet paper RP ₀ squeezed and dehydrated by the dewatering roll unit 96 is transferred from the upper surface of the lower mesh belt 105 to the lower surface of the upper smooth surface belt 145. when it is, tension is applied to the wet paper RP _0, effectively prevents creasing of wet paper RP _0.

  The angle defining roll part (angle defining means) 96C is for assisting and squeezing the dewatering action by the preliminary dewatering roll part 96A and the main dewatering roll part 96B, and is provided upstream of the preliminary dewatering roll part 96A. The inclination angle between the mesh belt 105 and the smooth surface belt 145 that is provided and inserted into the preliminary dewatering roll portion 96A is defined.

  Specifically, the angle defining roll portion 96C defines an inclination angle between the mesh belt 105 and the smooth surface belt 145 inserted into the preliminary dewatering roll portion 96A. Rolling contact from below to the preliminary dewatering roll section 96A, and a mesh belt guide roll 130 for defining the insertion angle of the mesh belt 105 with respect to the preliminary dewatering roll section 96A. And a smooth surface belt guide roll 131 that defines the insertion angle of the smooth surface belt 145.

  The mesh belt guide roll 130 defines the insertion angle of the mesh belt 105 with respect to the preliminary dewatering roll portion 96A, and the smooth surface belt guide roll 131 defines the insertion angle of the smooth surface belt 145 with respect to the preliminary dewatering roll portion 96A. As a result, the inclination angle formed by the mesh belt 105 and the smooth surface belt 145 is indirectly set within a predetermined range.

The inclination angle formed by the mesh belt 105 and the smooth surface belt 145 is such that a large amount of water contained in the wet paper RP ₀ is squeezed upstream of the preliminary dewatering roll unit 96A by the preliminary dewatering action of the preliminary dewatering roll unit 96A. The large amount of the squeezed water is set so as to effectively prevent the wet paper RP ₀ from being reabsorbed by the wet paper RP _{0 and} being slurried again.

In other words, the preliminary dewatering roll 120 and the preliminary press roll 121 of the preliminarily dewatering roll section 96A squeeze the mesh belt 105 having the wet paper RP ₀ placed on the upper surface and the smooth surface belt 145 in a pinched form from both the upper and lower sides. If, moisture contained in the wet paper RP ₀ is squeezed out to the upstream side of the both rolls 120, 121.

In this case, assuming that the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is large, the upper smooth surface belt 145 is located on the lower mesh belt 105 at the position near the upstream side of both rolls 120 and 121. of it located in spaced condition the wet paper RP _0, Therefore, a part of the large amount of water contained in the wet paper RP ₀ squeezed and absorbed again in the wet paper RP _0, the wet paper web There is a possibility that RP ₀ may be slurried again.

On the other hand, assuming that the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is small, the upper smooth surface belt 145 is located on the lower mesh belt 105 at a position near the upstream side of both rolls 120 and 121. becomes a state of being pressed against the wet paper RP ₀ above, Thus, all of the water squeezed from the wet paper RP ₀ drops to the lower side through the mesh belt 105, the wet paper RP ₀ The re-slurry of the wet paper RP ₀ can be reliably prevented.

  As a result of various tests, the inclination angle α formed by the mesh belt 105 and the smooth surface belt 145 is preferably set to 1 to 20 °, more preferably set to 3 to 7 °. In the illustrated embodiment, It is set to 5 °.

Thus, by driving the drive motor 106, the preliminary dewatering roll unit 96A in the dewatering roll unit 96 and the rolls 120, 121, 125, 126 of the main dewatering roll unit 96B rotate, first, by squeezing roll pair 122, moisture the mesh belt 105 and the smooth surface belt 145 are rolled and squeezes the upper and lower sides at a specified preliminary pressure, in the wet paper RP ₀ on the mesh belt 105 Is preliminarily dehydrated (in the illustrated embodiment, the moisture content of the wet paper RP ₀ is reduced from 90-85% to 80-75%).

Subsequently, the mesh belt 105 and the smooth surface belt 145 are squeezed and rolled with a predetermined book pressure from both the upper and lower sides by a pair of squeezing rolls 127 in the dewatering roll section 96B. The moisture contained in the wet paper RP ₀ is finally dehydrated and removed to obtain a dry paper having a predetermined moisture content, that is, recycled paper RP (in the illustrated embodiment, wet paper having a moisture content of 80 to 75%. RP ₀ becomes dry paper RP having a moisture content of 70 to 65%). The white water W that has been squeezed and dehydrated from the wet paper RP ₀ through this series of steps is collected in the white water collection tank 45 of the water supply device 27.

The wet paper RP ₀ squeezed and dewatered by the dewatering roll unit 96 is transferred and transferred from the upper surface of the lower mesh belt 105 to the lower surface of the upper smooth surface belt 145 in the downstream portion of the dewatering roll unit 96. It is conveyed with the surface belt 145, and the drying process by the drying belt conveyor part 97 is implemented.

The transfer action is considered to occur due to the smooth surface structure of the smooth surface belt 145. That is, the surface of the lower mesh belt 105 is a fine uneven surface formed by opening a large number of fine continuous pores, whereas the surface of the upper smooth surface belt 145 is a smooth surface without holes. As a result, it is considered that the wet paper RP ₀ slightly containing water is adsorbed by the surface tension with the surface of the smooth surface belt 145.

  The drying belt conveyor unit 97 is a portion that is formed by the papermaking belt conveyor unit 95 and then further dried by heating and drying the dry paper RP that has been squeezed and dehydrated by the dewatering roll unit 96. The heat drying unit 171 and the recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 are configured as main parts.

The drying conveyor 170 conveys the wet paper RP ₀ squeezed and dehydrated by the dewatering roll unit 96 while smoothing, and includes the smooth surface belt 145 and the drive motor 106 that drives the smooth surface belt 145 to travel. It becomes.

The smooth surface belt 145 conveys the wet paper RP ₀ while being heated and dried. Specifically, the smooth surface belt 145 is an endless belt formed by connecting and forming plates having a smooth surface structure having a predetermined width in an annular shape having a predetermined length. . The plate material having a smooth surface structure is made of a material that can finish one side surface of the wet paper RP0 to an appropriate smooth surface and can withstand the heating action by the heating and drying unit 171 to be described later. In the illustrated embodiment, a fluororesin belt is employed.

  As shown in FIG. 1, the smooth surface belt 145 is suspended and supported by a driving roller 176, a driven roller 177, a dewatering roll unit 96, and a driven roller 178 so as to be able to rotate and travel through the driving roller 176. The drive motor 106 is drivingly connected.

  As described above, the drive motor 106 that travels and drives the smooth surface belt 145 is also used as a travel drive source for the papermaking net conveyor 100 and the dewatering roll unit 96, and the covering belt 200 described later.

The heating and drying unit 171 is a part that heats and dries the wet paper RP ₀ sandwiched and conveyed between the smooth surface belt 145 and the coated belt 200 of the recycled paper smoothing processing unit 10 to be described later. Specifically, the wet paper RP ₀ The smooth surface belt 145 that conveys and supports the lower side surface of the lower surface is heated from the lower side by a heater 180 disposed in the middle of the travel route.

  The heater 180 of the illustrated embodiment is in the form of a heater plate that is in sliding contact with the side of the smooth surface belt 145 opposite to the conveyance support surface of the wet paper RP0, and is provided in a horizontal traveling portion in the travel path of the smooth surface belt 145. The smooth surface belt 145 is provided in sliding contact with the side surface opposite to the upper surface, that is, the lower surface, which is the holding surface of the wet paper RP0. As a result, the wet paper RP0 on the smooth surface belt 145 is indirectly heated and dried by the smooth surface belt 145 heated by the heater plate 180.

The recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 transfers the entire wet paper RP ₀ conveyed by the smooth surface belt 145 of the drying conveyor 170 from the upper side in the heating and drying unit 171. It is in the form of a pressing means that presses with a uniform pressure.

  Specifically, the recycled paper smoothing processing unit 10 in the form of the pressing means includes a covering belt conveyor 190 and a plurality of pressure rollers 191, 191,... As shown in FIGS. It is provided as a main part.

The covering belt conveyor 190 travels while covering the entire wet paper RP ₀ on the smooth surface belt 145 so as to be sandwiched between the smooth surface belt 145 and covering the entire wet paper RP ₀ from above. 200 is configured to travel linearly in the same horizontal direction in a state where it is overlapped with the smooth surface belt 145.

Specifically, the coated belt conveyor 190 is configured as the above-described coated belt in the form of an endless belt that travels while covering the entire wet paper RP ₀ on the smooth surface belt 145 with the smooth surface belt 145 sandwiched therebetween. 200 and the drive motor 106 for driving the covered belt 200 to travel.

The covering belt 200 is specifically formed from the mesh belt of the ventilation network structure composed of numerous mesh cells for venting steam to heat evaporates from the wet paper RP _0.

Sheet material breathable structure constituting the mesh belt 200 is a material moisture heated and evaporated from the wet paper RP ₀ on the smooth surface belt 145 can smoothly pass released upward by numerous mesh, preferably, above Corrosion resistance of polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) (generally referred to as “nylon” (registered trademark)), stainless steel (SUS), etc. In the illustrated embodiment, the PET mesh belt 200 is excellent in heat resistance.

  Further, the mesh structure of the mesh belt 200 is preferably a fine mesh structure or a fine and smooth mesh structure. Like the mesh belt 105 of the papermaking unit 4 described above, specifically, the characteristics of the target paper. Correspondingly selected.

  For example, the mesh size of the mesh belt 200 is set to be larger than that of the mesh belt 105 of the paper making unit 4 and is preferably set to 12 mesh to 40 mesh (the mesh of the mesh belt 105). In the illustrated embodiment, a 25 mesh mesh belt 200 is employed.

As long as the mesh belt 200 has heat resistance against high heat at the time of heat drying and air permeability capable of venting water vapor evaporated from the wet paper RP _0, design requirements as severe as those of the mesh belt 105 forming the core of the papermaking unit 4 are required. However, as the mesh belt 200 of the illustrated embodiment, a PET mesh mesh belt of 25 mesh is used.

Further, the width dimension of the mesh belt 200 is set to be the same as the width dimension of the smooth surface belt 145 so as to overlap the smooth surface belt 145 and sandwich the wet paper RP ₀ between them.

  As shown in FIGS. 1 and 5, the mesh belt 200 is suspended and supported so as to be able to rotate and drive via a driving roller 205, a driven roller 206, and pressure rollers 191, 191,. Via the drive motor 106.

The coverage area of the mesh belt 200 with respect to the wet paper RP ₀ (recycled paper RP) is provided to face the heater plate 180 in the horizontal traveling portion of the traveling path of the smooth surface belt 145.

Further, the pressure rollers 191, 191,... Press the mesh belt 200 from above, and are predetermined in the traveling direction of the covering belt 200 in the covering range of the covering belt 200 with respect to the wet paper RP ₀ (recycled paper RP). A plurality of the belts are arranged in parallel with an interval, whereby the covering belt 200 presses the wet paper RP ₀ on the smooth surface belt 145 with a uniform pressure over the entire length of the covering range, and warps the wet paper RP ₀ (recycled paper RP). The surface of the wet paper RP ₀ (recycled paper RP) that is in contact with the surface of the smooth surface belt 145 is made to have an appropriate smooth surface without causing any wrinkles.

These pressure rollers 191, 191,... Are in the form of small-diameter solid cylindrical rolls made of a highly rigid material, and the arrangement of these pressure rollers 191, 191,. Is set so as to be able to form a flat smoothing surface for smoothing the entire wet paper RP ₀ (recycled paper RP) in cooperation with the upper surface of the smooth surface belt 145.

  The pressure rollers 191, 191,... In the illustrated embodiment are solid metal rollers having an outer diameter that can secure a pressure roller arrangement interval that can form and maintain the smoothing surface of the covering belt 200. In addition, the apparatus body 54 is rotatably supported by the device body 54 (a specific support structure is not shown).

  The number of pressure rollers 191, 191,... Is appropriately increased or decreased according to the purpose within a range that satisfies the above conditions.

  Then, in the heating and drying unit 171 of the drying belt conveyor unit 97, the wet paper RP0 is supported and supported by the smooth belt 145 on the lower side, and the clothes are supported and supported by the mesh belt 200 on the upper side. The pressure rollers 191, 191,... Composed of the plurality of small-diameter rollers arranged in the above press the mesh belt 200 with a uniform pressure from above.

  As a result, the wet paper RP0 conveyed in a sandwiched manner by the belts 145 and 200 with a predetermined pressure effectively eliminates and removes wrinkles and warpage generated in the wet paper RP0 in the previous paper making process, Generation of wrinkling and warping of the wet paper due to the heating and drying action by the plate 180 is also effectively prevented, and an appropriate air permeability of the upper mesh belt 200 is obtained, and the entire surface of the wet paper RP0 is uniformly dried. As the wet paper RP0, a smooth recycled paper (dry paper) RP can be regenerated as a whole.

  The traveling speed of the mesh belt 200 is controlled in synchronism with the traveling speed of the smooth surface belt 145 in the drying conveyor 170 serving as the drying process unit, so that smooth and desired recycled paper can be obtained. ing.

That is, if the traveling speed of the upper mesh belt 200 is not synchronized with the transport speed of the lower smooth surface belt 145, the wet paper RP ₀ (or dry paper (recycled paper RP)) is loosened and wrinkles are generated, On the contrary, a desired smoothing effect cannot be obtained, such as tearing due to excessive tension. In order to prevent this, it is necessary to synchronize the traveling speed of the mesh belt 200 with the conveying speed of the smooth surface belt 145 of the drying process unit 170.

  In the illustrated embodiment, since the traveling drive source of both belts 145 and 200 is the common drive motor 106, the traveling speeds of both belts 145 and 200 are synchronized by the mechanical configuration of the drive transmission system. .

  A peeling member 210 is provided on the smooth surface belt 145 on the downstream side of the heating and drying unit 171. The release member 210 is dried and conveyed on the smooth surface belt 145, that is, recycled paper RP (water content 10 to 10). 7%) are sequentially peeled from the holding surface of the smooth surface belt 145.

  In this connection, a fixed-size cutter unit 211 is provided at the end of the traveling path of the smooth surface belt 145 on the downstream side of the peeling member 210, and the recycled paper RP peeled from the smooth surface belt 145 is Here, it is cut into a predetermined shape (in the illustrated embodiment, the shape and dimension of the A4 plate) and discharged from the discharge port 8 of the apparatus case 6.

  The device control unit 5 automatically controls the operations of the respective drive units of the pulp manufacturing unit 2, the pulp concentration adjusting unit 3 and the paper making unit 4 described above. Specifically, the CPU, ROM, RAM And a microcomputer including an I / O port.

  The apparatus control unit 5 incorporates a program for causing the pulp manufacturing process of the pulp manufacturing unit 2, the concentration adjusting process of the concentration adjusting unit 3, and the paper making process of the paper making unit 4 to be executed in conjunction with each other. Various information necessary for driving each component 2 (20, 21), 3 (3A, 3B), 4 (95, 96, 97, 10), for example, driving time and rotation of the stirring device 26 in the disaggregation unit 20 Speed, water supply timing and water supply amount of the water supply device 27, driving time and circulation amount of the circulation pump 69 in the beating unit 21, driving time and rotation speed of the grinder 50, and adjustment timing and beating gap G adjustment amount of the gap adjusting means 57 And the traveling speed of the conveyors 100 and 170 in the paper making unit 4, the driving time of the heating and drying unit 171 and the operation timing of the fixed size cutter unit 211. There are appropriate selective input in advance as data or keyboard.

  Further, as described above, the weight sensors 48 and 87 and the drive units 35, 41, 56, 61, 66, and 106 are electrically connected to the device control unit 5, and the device control unit 5 The drive units 35, 41, 56, 61, 66, and 106 are controlled in accordance with these various actually measured values and control data.

  Thus, the used paper recycling apparatus 1 configured as described above is activated when the power is turned on, and the component control units 5 (20, 21), 3 (3A, 3B), 4 (95, 10) are activated by the apparatus control unit 5. , 96) are automatically controlled in relation to each other, so that the used paper UP, UP,... Put into the inlet 7 of the apparatus case 6 are separated by the disaggregation unit 20 and the beating unit 21 of the pulp manufacturing unit 2. After the beating process, the waste paper pulp UPP is manufactured, and the pulp concentration adjusting unit 3 prepares the pulp suspension PS having a papermaking concentration. Then, the pulp suspension PS is converted into a papermaking belt conveyor unit 95 of the papermaking unit 4, Paper is made by the dewatering roll unit 96 and the drying belt conveyor unit 97, regenerated as recycled paper RP, and discharged from the discharge port 8 of the apparatus case 6 to the recycled paper receiving tray 9.

In this case, the recycled paper smoothing processing unit 10 in the drying belt conveyor unit 97 of the paper making unit 4 causes the heating paper drying unit 171 to move the entire wet paper RP ₀ (recycled paper RP) conveyed by the smooth surface belt 145 to the upper side. The pressing means 10 covers the entire wet paper RP ₀ (recycled paper RP) on the smooth surface belt 145 so as to be sandwiched between the smooth surface belt 145 and the smooth surface belt 145. And a plurality of pressure rollers 191, 191,... That are arranged at predetermined intervals in the traveling direction of the covering belt 200 and press the covering belt 200 from above. It is an emergency equipment-sized waste paper recycling device 1 that can be installed not only in large offices but also in small-scale stores and general homes. In a narrow used paper processing space, it is possible to reliably reproduce the wet paper RP ₀ paper manufactured in the paper making net conveyor 100 is the paper making process unit as wrinkle-free smooth recycled paper RP.

That is, the wet paper RP ₀ formed by the papermaking of the papermaking belt conveyor section (papermaking process section) 95 is conveyed by the smooth surface belt 145 in the heating and drying section 171 of the subsequent drying belt conveyor section (drying process section) 97. While being heated and dried, the whole is pressed with uniform pressure from above by a recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 in the form of pressing means.

In this case, the recycled paper smoothing processing unit 10 covers the entire wet paper RP ₀ on the smooth surface belt 145 while being covered with the smooth surface belt 145 so as to travel and is covered with a coated belt conveyor 191. , And a plurality of pressure rollers 191, 191,... That are arranged at predetermined intervals in the traveling direction of the covering belt 200 and press the covering belt 200 from above, so that the heating and drying unit 171 is conveyed. The wet paper RP ₀ (recycled paper RP) on the smooth surface belt 145 that passes therethrough is covered from above by the covering belt conveyor 190, and at the same time by a plurality of pressure rollers 191, 191,. Thus, the heat-drying process is performed while being sandwiched with a uniform pressure from above and below.

In other words, the wet paper RP ₀ (recycled paper RP) is heated and dried while being held in a flat state by a sandwich structure having a predetermined pressure. As a result, the wet paper RP ₀ is generated in the wet paper RP ₀ in the previous paper making process. The wrinkles and warpage are effectively eliminated and removed, and the occurrence of wrinkles and warpage of the wet paper RP ₀ (recycled paper RP) due to the heat drying action is also effectively prevented, so that a smooth recycled paper can be regenerated as a whole.

Further, the covering belt 200 of the covering belt conveyor 190 is formed of a reticulated belt composed of an infinite number of meshes capable of passing and releasing the moisture evaporated by heating from the wet paper RP ₀ on the smooth surface belt 145 upward, Despite the presence of the covering belt 200, the steam generated by heating of the wet paper RP ₀ is effectively increased escape, drying can be smoothly accelerated.

Further, the wet paper RP ₀ stably stabilizes the sandwich structure by controlling the traveling speed of the mesh belt constituting the covering belt 200 in synchronization with the traveling speed of the smooth surface belt 145 in the drying process section. It can be heat-dried while being maintained.

  Note that the above-described embodiments merely show preferred embodiments of the present invention, and the present invention is not limited to these, and various design changes can be made within the scope thereof.

  For example, the specific configuration of the recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means) 10 according to the present invention is not limited to the illustrated embodiment, and other configurations having similar functions. Can be adopted.

  As an example, in the illustrated embodiment, since the drive motor 106 that travels and drives the smooth surface belt 145 is also used as a travel drive source of the coated belt 200, the travel speed of both 145 and 200 is the drive transmission system. Although it is set as the structure synchronized by a machine structure, it is good also as a structure which controls synchronously these drive sources by the apparatus control part 5 using the separate independent driving | running drive source about each belt 145,200.

UP Wastepaper UPP Wastepaper pulp PS Pulp suspension RP Recycled paper 1 Used paper recycling equipment 2 Pulp production department 3 Pulp concentration adjustment section 4 Papermaking department (papermaking equipment)
5 Device control unit (control unit)
10 Recycled paper smoothing processing unit (recycled paper smoothing device, recycled paper smoothing processing means)
95 Papermaking belt conveyor section 96 Dewatering roll section 97 Drying belt conveyor section 100 Papermaking net conveyor 105 Mesh belt 106 Drive motor 145 Smooth surface belt 170 Drying conveyor 171 Heating drying section 180 Heating heater 190 Covering belt conveyor 191 Pressure roller 200 Mesh belt ( Coated belt)

Claims (11)

In a waste-size paper recycling device that can be placed where waste paper is generated, it is placed in the paper making section that produces recycled paper by making waste paper pulp produced in the pulp production department in the previous process, and smoothes the recycled paper. A recycled paper smoothing device for processing,
In the paper making section, provided in the drying belt conveyor section to dry the wet paper formed in the paper making belt conveyor section to make waste paper pulp and wet paper, and to make recycled paper,
In the heating and drying section of this drying belt conveyor section, it is in the form of pressing means that presses the entire wet paper transported by the smooth surface belt with uniform pressure from above,
This pressing means is arranged at a predetermined interval in the traveling direction of the coated belt, and a coated belt conveyor provided with a coated belt that travels by covering the entire wet paper on the smoothed belt with the smooth surface belt sandwiched therebetween. A recycled paper smoothing device for used paper recycling apparatus, comprising: a plurality of pressure rollers that press the coated belt from above. The coated belt conveyor is configured to run the endless belt in the form of an endless belt that travels while covering the entire wet paper on the smooth surface belt with the smooth surface belt sandwiched therebetween. The recycled paper smoothing device of the used paper recycling apparatus according to claim 1, further comprising a drive motor. The said covering belt is formed from the mesh belt which consists of an infinite number of meshes which can pass and release the water | moisture content which heat-evaporates from the wet paper on the said smooth surface belt upwards, The Claim 1 or 2 characterized by the above-mentioned. Recycled paper smoothing device for used paper recycling equipment. 2. The recycled paper smoothing device for used paper recycling apparatus according to claim 1, wherein the mesh of the mesh belt of the pressing means is set to 12 mesh to 40 mesh. The recycled paper smoothing of the used paper recycling apparatus according to claim 1, wherein the traveling speed of the mesh belt is controlled in synchronization with the traveling speed of the smooth surface belt in the drying process section. apparatus. The arrangement configuration of the pressure roller is set so that at least the lower surface of the covering belt can form a flat smoothing surface for smoothing the entire wet paper in cooperation with the upper surface of the smoothing belt. The recycled paper smoothing apparatus of the used paper recycling apparatus according to claim 1, wherein the recycled paper smoothing apparatus is used. The pressure roller is in the form of a solid metal roller having an outer diameter dimension capable of securing a pressure roller arrangement interval that can form and maintain the smoothing action surface of the covering belt, and can rotate freely. The recycled paper smoothing device of the used paper recycling apparatus according to claim 6, wherein the recycled paper smoothing device is supported. 2. The used paper recycling apparatus according to claim 1, wherein in the drying step, the smooth surface belt that conveys and supports the lower surface of the wet paper is heated by a heater from the lower side. Recycled paper smoothing device. The heater is in the form of a heater plate that is in sliding contact with the side of the smooth surface belt opposite to the wet paper transport support surface, and the wet paper on the smooth surface belt is heated by the heater plate. 9. The recycled paper smoothing device for used paper recycling apparatus according to claim 8, wherein the recycled paper smoothing device is indirectly heated and dried. In a papermaking apparatus constituting a furniture-sized wastepaper recycling apparatus that can be disposed at a place where wastepaper is generated, a papermaking apparatus that produces recycled paper by papermaking wastepaper pulp produced by a pulp production apparatus in a previous process,
A papermaking belt conveyor section for making wet paper by making a slurry-like pulp suspension in which water and waste paper pulp coexisting from the pulp manufacturing apparatus coexist,
A drying belt conveyor unit that dries the wet paper formed by the papermaking belt conveyor unit to recycle the paper;
A dewatering roll unit that squeezes and dehydrates the wet paper at the linkage of the papermaking belt conveyor unit and the drying belt conveyor unit,
The drying belt conveyor unit includes recycled paper smoothing processing means for processing and discharging wet paper formed by the papermaking belt conveyor unit as smooth recycled paper,
The recycled paper smoothing means comprises the recycled paper smoothing apparatus according to any one of claims 1 to 9. A pulp manufacturing department that produces waste paper pulp by separating and beating the used paper in a fixture-size device case, a paper making department that produces recycled paper by making waste paper pulp produced by this pulp manufacturing department, and these pulps It is equipped with a control unit that drives and controls the production unit and the papermaking unit.
11. A used paper recycling apparatus, wherein the paper making unit comprises the paper making apparatus according to claim 10.

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